Little Andrus Lake
Little Andrus Lake in Cass County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 13 ft visibility. Maximum depth: 37 ft. Surface area: 27.21 acres.
- Clarity
- 13 ft
- Max depth
- 37 ft
- Area
- 27 acres
- Public access
- Yes
Next lake in Cass County
Why Little Andrus Lake has no grade
We grade a lake only when its monitoring record clears the evidence bar: at least three phosphorus or chlorophyll-a samples in the last ten years, scored against EPA National Lakes Assessment thresholds for this lake’s ecoregion. For Little Andrus Lake, the only measurement available is water clarity, which is not a water-quality indicator on its own — EPA's National Lakes Assessment does not grade clarity. Sampling here has recorded water clarity, but not phosphorus and algae (chlorophyll-a).
Not Rated is not an F. It is EPA Integrated Reporting Category 3 — insufficient information. The water here may be excellent or poor; nobody has measured enough of it to say. Everything below that has been measured is still reported on this page.
Sampling is run by MPCA and volunteer programs, and published through the EPA Water Quality Portal. Read the full grading methodology.
Little Andrus Lake is a 27-acre lake in Cass County, Minnesota with a maximum depth of 37 feet (14-foot average). Limited fish-species data available. Public access is available with 1 public boat landing.
Source: EPA Water Quality Portal sampling records, Minnesota DNR LakeFinder, last sampled 2020-09-02. Grade methodology: LakeGrade methodology.
Watch Little Andrus Lake water quality
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Swimming Safety
Not ratedLimited data
Not rated for swimming — there is not enough monitoring data to judge this lake
Water quality measurements for Little Andrus Lake
These readings exist but do not meet the evidence bar for an A–F grade — see why.
Good clarity, visible to about 13 ft. Trophic State Index: 40.
| Metric | Value | Grade |
|---|---|---|
| Water Clarity (Secchi Depth) | 13 ft | Not graded |
| Phosphorus | No recent samples | |
| Chlorophyll-a (Algae) | No recent samples | |
| Trophic State Index (TSI) | 40 | Mesotrophic |
Moderate nutrients, good water quality
Where to stay near Little Andrus Lake
Compare lakeside cabins, hotels, and vacation rentals near Little Andrus Lake in Cass County, Minnesota — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Little Andrus Lake
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Lake Details
| Characteristic | Value |
|---|---|
| Maximum Depth | 37 ft |
| Average Depth | 14 ft |
| Surface Area | 27 acres |
| Shoreline Length | 1 mi |
| Littoral Zone | 51% |
| Public Access | Yes |
Lake Size & Watershed
Size, shoreline, and watershed area from HydroLAKES (HydroSHEDS).
Recreation & Access
- Snowshoe LakePublic
Fishing Little Andrus Lake
DNR Fisheries Survey Summary
15 surveys on file from MN DNR Fisheries. Most recent: 2022-08-18 (Targeted Survey).
Top Species by Catch Rate
| Species | Avg CPUE | Avg Weight |
|---|---|---|
| Fathead Minnow | 246.67 | — |
| Brook Trout | 6.37 | 0.66 lb |
CPUE = catch per unit effort, averaged across surveys (excludes juvenile shoreline seining). Higher CPUE = more abundant in standardized sampling.
Length Distributions
Number of fish caught at each inch class in the most recent survey that recorded lengths. Red dashed line marks an approximate trophy threshold for that species.
Brook Trout
From the 2022-08-18 survey
Snowshoe (Little Andrus) Lake is a designated stream trout lake that is managed for Brook Trout. The dissolved oxygen and temperature profiles were measured in August 2022 to monitor habitat for trout. Optimal thermal and oxygen conditions for Brook Trout (10-16°C [50-61°F] and greater than or equal to 5 ppm DO)…
DNR Reports & Resources
Minnesota DNR LakeFinder publishes lake survey, fish stocking, water access, and aquatic plant data for Little Andrus Lake. 3 reports on file.
These links open on the official state DNR websites (Wisconsin DNR survey PDFs · Minnesota DNR LakeFinder).
- —Fisheries Lake Survey — Little AndrusFisheries Lake Survey · MN DNR LakeFinder
- —Aquatic Plant Report — Little Andrus (1145)Aquatic Plant Report · MN DNR LakeFinder
- —Fish Stocking History — Little AndrusFish Stocking History · MN DNR LakeFinder
Graded lakes near Little Andrus Lake
Little Andrus Lake has no grade, but these lakes within a short drive do.
Nearby Lakes in Cass County
Frequently asked questions about Little Andrus Lake
What is the water quality grade for Little Andrus Lake?
- Little Andrus Lake in Cass County, Minnesota is not rated for water quality — its monitoring record does not meet the evidence bar. Water clarity: 13 ft visibility. Maximum depth: 37 ft. Surface area: 27.21 acres.
Is Little Andrus Lake safe to swim in?
- Not rated for swimming — there is not enough monitoring data to judge this lake. Little Andrus Lake is not rated for water quality — its monitoring record does not meet the evidence bar. Always check local health department advisories before swimming.
How deep is Little Andrus Lake?
- Little Andrus Lake has a maximum depth of 37 feet and an average depth of 14 feet. The lake covers 27.21 acres.
Are there boat ramps on Little Andrus Lake?
- Little Andrus Lake has 1 documented boat landing in the USGS National Boat Ramps inventory. Named access points include Snowshoe Lake. Public access is listed as yes.
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Where this data comes from
8 measurements from 1 monitoring station, 2020. Retrieved from the EPA Water Quality Portal on 2026-08-02.
Collected and reported by
- Minnesota Pollution Control Agency - Ambient Surface Water
MNPCA8 samples · 2020
Analytical methods
- Field measurement/observation, generic method
Monitoring station identifiers (1)
Grade thresholds from the EPA National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See how grades are calculated and data sources.
Other records on this page
Lake size & watershed from HydroLAKES (HydroSHEDS)
Lake details from Minnesota DNR LakeFinder
Named boat-access points from the USGS National Boat Ramps inventory